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CVE-2019-5598

Status Candidate

Overview

In FreeBSD 11.3-PRERELEASE before r345378, 12.0-STABLE before r345377, 11.2-RELEASE before 11.2-RELEASE-p10, and 12.0-RELEASE before 12.0-RELEASE-p4, a bug in pf does not check if the outer ICMP or ICMP6 packet has the same destination IP as the source IP of the inner protocol packet allowing a maliciously crafted ICMP/ICMP6 packet could bypass the packet filter rules and be passed to a host that would otherwise be unavailable.

Related Files

FreeBSD Security Advisory - FreeBSD-SA-19:06.pf
Posted May 15, 2019
Authored by Synacktiv | Site security.freebsd.org

FreeBSD Security Advisory - States in pf(4) let ICMP and ICMP6 packets pass if they have a packet in their payload matching an existing condition. pf(4) does not check if the outer ICMP or ICMP6 packet has the same destination IP as the source IP of the inner protocol packet. A maliciously crafted ICMP/ICMP6 packet could bypass the packet filter rules and be passed to a host that would otherwise be unavailable.

tags | advisory, protocol
systems | freebsd
advisories | CVE-2019-5598
MD5 | e3e8d4e9aa9533a9ffc33b450c1d1e5e
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